Change in coreboot[master]: src/security/vboot: Set up secure counter space in TPM NVRAM

[Karthik Ramasubramanian (Code Review)]

Attention is currently required from: Andrey Pronin, Raul Rangel, Paul Menzel, Julius Werner, Yu-Ping Wu.
Karthik Ramasubramanian has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/59476 )

Change subject: src/security/vboot: Set up secure counter space in TPM NVRAM
......................................................................

Patch Set 2:

(1 comment)

File src/security/vboot/secure_counter.h:

https://review.coreboot.org/c/coreboot/+/59476/comment/40586765_55c27ab5 
PS1, Line 14: 	SECURE_COUNTER4_NV_INDEX,		/* 0x1012 */
> Done

Sorry for prematurely saying done. I moved it to antirollback.h. Based on Raul's comment above, I feel it makes sense to define config items for:

* Secure counter name
* Secure counter starting NV Index
* Number of consecutive Secure counters.

This might help if more platforms use different secure counters for different purposes. Or do you think it is over-engineering?